Computer Program for Design and Analysis of Sheet Pile Walls by Classical Methods (CWALSHT) Including Rowe's Moment Reduction. User's Guide

Dawkins, William P.

doi:10.21236/ada243811

Cited by 2 publications

(2 citation statements)

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“…The current US Army Corps of Engineers design and/or analysis procedures for cantilever sheet-pile walls use the 'traditional method' through a computer program CWALSHT (Dawkins, 1991). This method uses classical limit equilibrium soil mechanics principles for determining the factors of safety to evaluate an existing wall (or to design a new wall with a desired factor of safety).…”

Section: Comparison With Limit Equilibrium Analysis Methodsmentioning

confidence: 99%

Numerical Studies of I-Shaped Levee Flood Wall at St. Paul, Minnesota Site

Hu¹,

Wang²,

Makdisi³

et al. 2014

Geo-Congress 2014 Technical Papers

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In this study, an advanced numerical analysis (using the finite difference program FLAC) was performed for a section of the U.S. Army Corps of Engineers constructed flood wall in St. Paul, Minnesota. Measured standard penetration test (SPT) data was used to develop shear strengths of the sands underlying the site. Best estimate, upper-bound, and lower-bound soil strength and modulus values were selected for the analyses of the base case configuration.Numerical analyses were carried out to evaluate the performance of the I-wall under flood loading conditions by raising the water level on the flood side in one-foot increments to the top of the wall. Steady water flow and seepage were simulated after each of the one-foot water load increments. The results of I-wall performance in terms of computed wall deflections and wall responses (moment and shear force) are presented and discussed.The FLAC analyses also included a simplified "sheet pile only" case. The FLAC analyses results for this case are compared with those of limit equilibrium analyses (using the USACE computer program for the design of sheet pile-walls, CWALSHT). The comparison shows that the weight, width and structural stiffness of the concrete wall are factors that improve the stability of the I-wall and reduce the wall displacement. These effects are not accounted for in the classical limit equilibrium analyses.

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Section: Comparison With Limit Equilibrium Analysis Methodsmentioning

confidence: 99%

Numerical Studies of I-Shaped Levee Flood Wall at St. Paul, Minnesota Site

Hu¹,

Wang²,

Makdisi³

et al. 2014

Geo-Congress 2014 Technical Papers

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“…The mean Su layer for the top layer, layer 1, had Su equal to 220 psf from depth 0 ft to 2 ft; Su equal to 380 psf from depth 2 ft to 4 ft for layer 2; Su equal to 480 psf from depth 4 ft to 10 ft in layer 3; and Su equal to 226 psf at depth 10 ft and increasing by 18.33 psf per foot of depth in layer 4. While the SHANSEP method and variation in OCR with depth does not usually result in a constant Su with depth within each of the top three overconsolidated surface layers, similar Su values were collected in each of the first three layers and averaged to determine a single Su value assigned to that layer to simplify input for the CAXPILE software model (Dawkins 1984). This simplification provides insignificant error, due to the short lengths of the pile affected by these upper three layers encompassing a 10 ft depth as well as the averaging process being applied to these three upper layers.…”

Section: Soil Distributions and Capacities (Limit States 3 And 4)mentioning

confidence: 99%

Load and resistance factors from reliability analysis Probability of Unsatisfactory Performance (PUP) of flood mitigation, batter pile-founded T-Walls given a target reliability index (𝛽)

Ebeling¹,

White²,

Hite³

et al. 2023

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This technical report documents the research and development (R&D) study in support of the development of a combined Load and Resistance Factor Design (LRFD) methodology that accommodates both geotechnical and structural design limit states for design of the US Army Corps of Engineers (USACE) batter pile-founded, reinforced concrete flood walls. Development of the required reliability and corresponding LRFD procedures has been progressing slowly in the geotechnical topic area as compared to those for structural limit state considerations, and therefore this has been the focus of this first-phase R&D effort. This R&D effort extends reliability procedures developed for other non-USACE structural systems, primarily bridges and buildings, for use in the design of batter pile-founded USACE flood walls. Because the foundation system includes batter piles under flood loading, the design procedure involves frame analysis with significant soil structure interaction. Three example batter pile-founded T-Wall flood structures on three different rivers have been examined considering 10 geotechnical and structural limit states. Numerical procedures have been extended to develop precise multiple limit state Reliability calculations and for complete LRFD analysis of the example batter pile-founded, T-Wall reinforced concrete, flood walls.

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Computer Program for Design and Analysis of Sheet Pile Walls by Classical Methods (CWALSHT) Including Rowe's Moment Reduction. User's Guide

Cited by 2 publications

References 1 publication

Numerical Studies of I-Shaped Levee Flood Wall at St. Paul, Minnesota Site

Numerical Studies of I-Shaped Levee Flood Wall at St. Paul, Minnesota Site

Load and resistance factors from reliability analysis Probability of Unsatisfactory Performance (PUP) of flood mitigation, batter pile-founded T-Walls given a target reliability index (𝛽)

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